Large-eddy simulation of a turbulent buoyant flame interacting with droplets
A dynamic large-eddy simulation methodology is applied to a simplified water-spray fire suppression system to investigate droplet effects on a buoyant gas ame. A hybrid Eulerian-Lagrangian approach is employed for the gas-liquid system. Dynamic subgrid models are included to capture the local and unsteady interactions between the two phases. The effectiveness of changing spray angles on combustion suppression has been investigated. The drag effects of droplets cause significant changes to the flow and flame structures. Dense droplets, in particular, can cut through the reaction zones, causing flame extinction. The high temperature regions associated with reaction zones are suppressed by the spray droplets in all cases.
large-eddy simulation (LES) buoyant flame water droplets interaction
J.Xia K.H.Luo S.Kumar
Energy Technology Research Group, chool of Engineering Sciences, University of Southampton,Southampt BRE, Garston, Watford, WD25 9XX UK
国际会议
The Fifth International Conference on Fluid Mechanics(第五届国际流体力学会议)
上海
英文
2007-08-15（万方平台首次上网日期，不代表论文的发表时间）